THE EFFECTS OF SOME LOWER EXTREMITY KINEMATIC PARAMETERS ON ACCURACY THROWING IN TEAM HANDBALL

Abstract

The purpose of the present study was to determine the effects of throwing velocity and accuracy on some kinematic parameters in elite and amateur handball players. Two groups of young healthy, male subjects took part in the experiments: one group of 9 handball players, Turkish National Handball Team (Group 1 (age:25.44±3.28 year, height: 188.88±6.75 cm, weight: 89.55±10.33 kg), another group of 9 physical education students (Group 2 (age: 22.66±1.58 year, height: 183.88±5.17 cm, weight: 89.00±11.82 kg ). In this study, thirty six overarm throwing performance were recorded by using two cameras (BASLER- A602 fc color, 100 Hz ) and tested using HUBAG software. Student-t test for independent samples was used to compare baseline values between groups. The Pearson product moment correlation coefficient was used to examine the relationship between isokinetic strength and ball velocity. The level of significance was set at 0,05. Stride lengths of Group II were not increased as a linear, before the throwing. Only there was a signifant diffrences between groups at value of L3(%h) in accuracy throwing (p<.05). The angle of knee flexion bigger than the other group at cocking phase and ball release phase. It was found negative correlation between lead knee flexion and ball release angle and between lead knee flexion angle and trunk side angle in cocking phase at accuracy throwing. There was a significant difference between groups at ball velocity, but elite handball players throw with lower throwing velocity but more accurately.

Keywords

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BAZI ALT EKSTREMİTE KİNEMATİK PARAMETRELERİNİN HENTBOLDA İSABETLİ ATIŞ PERFORMANSINA ETKİSİ.

Abstract

Çalışmanın amacı, hentbolda yüksek temel kale atışlarında bazı kinematik parametrelerin atış hızı ve isabetliliğine etkisinin incelenmesidir. Araştırmaya 9 elit erkek hentbol oyuncusu (Türkiye Milli Hentbol Takımında oynayan)(Grup 1) ve 9 erkek Beden Eğitimi ve Spor Yüksekokulu öğrencisi(Grup 2) olmak üzere toplam 18 sporcu katılmıştır. Her sporcu, üç adım hız alarak atış çizgisinden 6 m uzaklıkta bulunan kalenin üst köşelerine yerleştirilen hedeflere temel atış performansı gerçekleştirmiş, uygulanan performans iki adet hızlı video kamera (BASLER- A602 fc color, 100 Hz) ile kayıt edilmiştir. Elde edilen veriler HUBAG hareket analiz programı ile üç boyutlu olarak analiz edilmiştir. Her sporcu iki kale atışı gerçekleştirmiş, isabetli ve isabetsiz atışları değerlendirilmiştir. Kinematik parametrelerin gruplar arasındaki farklılıklarının belirlenmesinde Student-t testi, Mann-Whitney U testi, parametreler arasındaki ilişkinin değerlendirilmesinde Pearson Korelasyonu kullanılmıştır. Sonuçlar p<.05 seviyesinde değerlendirilmiştir. Atış öncesi adım uzunluk değerlerinde, Grup 2'de, Grup 1'de olduğu gibi lineer bir artış gözlenmemiş, sadece isabetli atışlarda L3(%h) değerinde gruplar arasında anlamlı fark belirlenmiştir (p<.05). Kurulma evresinde ve topun elden ayrılma evresinde diz fleksiyon açı değerleri Grup 2 için daha büyük bulunmuştur. İsabetli atışlarda kurulma evresinde diz fleksiyon açısı ile topun uçuş açısı ve gövdenin yana eğilme açısı arasında negatif yönde ilişki bulunmuştur. İsabetli kale atışlarında top hızı gruplar arasında istatistiksel olarak anlamlı bulunmuş, daha fazla isabetli atış yapan grubun top hızı daha düşük belirlenmiştir.

Keywords

• Temel atış, hentbol, kinematik analiz, biyomekanik

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